Silo.



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SlLO.: (Application med my as. 1901.) f

No. 69mm.

(No Model.)

UNITED STATES JOSEPH SMITH, OF WESTMINSTER, MARYLAND.

SlLO.

sPEcIFIc'A'rIoN forming para of Letters Patent No. 691,818, dated Jennery 28, 190g.

Application filed May 25, 1901. Serial No. 61,920.. (No modell! T0 @ZZ whom it may concern:

Be it known that I, JOSEPH W. SMITH,- a citizen of the United States, residing at and whose postoffice address is No; 79 West Main street, Westminster, in the county of Carroll and State of Maryland, have invented new and useful Improvements in Silos, of which the following is a specification.

This invention relates to new and useful improvements in silos; and the primary object thereof is to construct a device of the character described which is provided with a plurality of normally closed openings Whereby easy access may be hadthereto.

A further object is to provide an improved closure for these openings which may be arranged so as to cause the silo to be air-tight when the closures are in place.

A further object is toso arrange the securing-bars that they will form footholds and constitute ladder portions whereby the operator may be provided with convenient means for scaling the silo.

A still further object is to arrange thesecuring-bar for fastening the closu re so it may be detached from engagement with the sides of vertical strips of the silo which form the door-frame, thus permitting the door to be forced within the silo, so that access may be easily gained thereinto.

With these objects in view the invention consists in the peculiar construction and novel arrangement, all of which will be specilically described hereinafter and illustrated in the accompanying'draWin-gs, in which Y Figure l is a fragmentary elevation of a silo, illustrating the manner'of attaching the closure. Fig. 2 is a vertical longitudinal section on the line 2 2 of Fig. l, and Fig. 3 is a transverse section on the line 3 3 of Fig. 1.

Referring now to the drawings by numer` als of reference, l designates a silo which may be constructed of usual form, preferably cylindrical, and provided with a plurality of openings 2, arranged in vertical series.

3 and 4 designate two vertical strips forming the sides of the door-frame, and the structure is reinforced by hoops 5 and 6.

7 designates a plurality of transverse strips having their ends secured within recesses 7 a, formed in the outer surfaces of the strips 3 and 4.

. The openings 2 are closed by doors 9, to the outer side of each of which is pivotally secured a locking-bar 8by means of a bolt l0, extending centrally through the door and bar and having a nutll on its outer threaded end.`

The side walls of theI openings 2 are rabbeted to form shoulders 12 and.l3, and the edges of the doors 9 arecorrespondingly rabbeted to form shoulders14 and l5. The upper and lower walls of the openings 2 are beveled, as

shown at 16 and 17, to iit the correspondinglybeveled edges of the doors 9. The vertical strips 3 and 4 are also recessed, as indicated by dotted lines in Fig. 3, to receivethe ends of the pivoted locking-bars 8, so that when the nuts 11 are tightenedy the bars will be firmly held in horizontal position.

The strips 7 and the bars 8 (when the latter are clamped by the nuts 1l) serve as ladderrounds, by means of which the structuiie may be easily scaled.

By loosening the nuts l1 the bars 8 may be released from engagement with the recesses in the strips 3 and 4 and turned to the position shown by dotted lines in Fig. 1, after which the doors may be readily forced within the structure to permit access to the contents thereof.

Having thus fully described my invention', what I claim as new, and desire to secure by Letters Patent, is-

1. The combination with a silo provided with a vertically-arranged series of openings, ofparallel vertical strips at the sides of said openin gs, a series of parallel transverse strips having their ends secured in recesses formed in said vertical strips, inwardly-opening doors for closing said openings, and means for locking said doors comprising a bolt extending through the door, a movable bar pivotally secured upon the outer end of said bolt, and iitting the recesses formed in said vertical strips, and a nut for holding the door in close engagement with the Walls of said openings, said transverse strips and bars serving'as ladder-rounds.

2. The combination with a silo formed With a vertically-arranged series of openings having their side walls rabbeted and their upper and lower walls beveled, of parallel vertical strips secured adjacent to the sides of said openin gs, a plurality of transverse strips have ing their ends secured within recesses formed holt, said transverse strips, and said bars when in said vertical strips, inwardly-opening doors clamped to the Vertical strips, serving as ladrabbeted and beveled to t the Walls of the der-rounds. openings, a looking-har pivotally secured to In testimony whereof I affix my signature 5 the outer side of each door, and having their in presence of two Witnesses.

ends fitted in the recesses formed in the ver- 1 A T tical strips, and means for clamping said JOSEPH W SMITH doors in position comprising a holt extending fitnessesz centrally through said door and looking-bar, GEO. E. BAUGHMAN,

lo and a nut on the outer threaded end of the t JOSEPH T. HERING. 

